CN103286386B - A kind of device for machine tool for processing tapered hole inner hole key slot - Google Patents
A kind of device for machine tool for processing tapered hole inner hole key slot Download PDFInfo
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- CN103286386B CN103286386B CN201310219662.3A CN201310219662A CN103286386B CN 103286386 B CN103286386 B CN 103286386B CN 201310219662 A CN201310219662 A CN 201310219662A CN 103286386 B CN103286386 B CN 103286386B
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- guide rail
- axle
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- frame
- blade row
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Abstract
The present invention discloses a kind of device for machine tool for processing tapered hole inner hole key slot, comprises blade row, the first feeding hydrocylinder, table slide, frame, worm gear, the first axle, worm screw, the second feeding hydrocylinder, the second convex guide rail, the second matrix guide rail, main motion hydraulic cylinder, U-shaped component, locking device, handle, index dial, the second axle and tapering auxiliary conditioning unit; Tapering auxiliary conditioning unit is arranged on the top of blade row; The upper end of U-shaped component is passed through the first axle and the second axle and frame and is connected, and the lower end of U-shaped component is fixedly connected with the second convex guide rail; Worm gear is arranged on the first axle.The bottom surface of main motion hydraulic cylinder is fixedly connected with the second matrix guide rail.The present invention have little mechanism process large workpiece, machining accuracy high, the feature such as taper hole keyway processing in arbitrary taper can be realized; The precision of tapering adjustment adjusts by worm gear transmission ratio, and can improve machining accuracy, conicity regulation scope is large.
Description
Technical field
The present invention relates to a kind of device for machine tool for processing tapered hole inner hole key slot, particularly relating to a kind of device for machine tool that can be used in the inner hole key slot processing of the large-scale component different size arbitrary taper taper holes such as screw.
Background technology
In machinery industry, taper hole application is very extensive, needs to process keyway in taper hole to realize and the cooperation of the diameter of axle, play the effect of transmission power in many situations.For the processing of inner hole key slot, traditional diamond-making technique is mainly through planer processing, slotting machine processing and electric spark machining etc.Current domestic most employing slotting machine, broaching machine, planer, lathe, milling machine etc. are processed, what wherein utilize slotting machine keyseat to use is the most extensive, the broaching machine of garland key is then only limitted to the keyway processing through hole, lathe can process inner hole key slot when non rotating main shaft, but machining accuracy is lower, line cutting technology is utilized to process keyway also more convenient.These traditional diamond-making technique working (machining) efficiencies are general lower, cannot transmit main engine power, and all have workpiece not easily clamping, need special fixture, machining accuracy not high, the stepless shortcoming such as adjustable of tapering can not be realized.Especially the processing carrying out keyway in the taper hole of large-size propeller component is almost impossible, and it is high and use inconvenience that design is greater than the slotting machine cost of scantling.
Summary of the invention
Goal of the invention: for above-mentioned prior art Problems existing and deficiency, namely solve taper hole keyway processing in the taper hole of large-size propeller component inconvenient, be difficult to realize and machining accuracy is not high, the problem of processing can not be realized in any tapered hole, the present invention disclose a kind of can the taper hole keyway of the different tapering of processing, realize conicity regulation and feeding and the device for machine tool for processing tapered hole inner hole key slot of locking.
For achieving the above object, the present invention can adopt following technical scheme for the device for machine tool processing tapered hole inner hole key slot: comprise blade row, the first feeding hydrocylinder, table slide, frame, worm gear, the first axle, worm screw, the second feeding hydrocylinder, the second convex guide rail, the second matrix guide rail, main motion hydraulic cylinder, U-shaped component, locking device, handle, index dial, the second axle and tapering auxiliary conditioning unit; Described tapering auxiliary conditioning unit is arranged on the top of blade row; The upper end of described U-shaped component is passed through the first axle and the second axle and frame and is connected, and the lower end of U-shaped component is fixedly connected with the second convex guide rail; Worm gear is arranged on the first axle, and worm screw is arranged in frame, and worm and wheel is suitable; One end that worm screw stretches out outside frame is connected mutually with handle; The bottom surface of main motion hydraulic cylinder is fixedly connected with the second matrix guide rail, the second convex guide rail and the second matrix guide rail suitable; Second feeding hydrocylinder is arranged on the second convex guide rail, the piston rod movement direction of the second feeding hydrocylinder and the second convex guide rail parallel; Blade row is connected with the upper end of main motion hydraulic cylinder, and blade row is provided with gathering sill, the piston rod of main motion hydraulic cylinder is equipped with knife rest, knife rest is equipped with cutter, and the both sides of blade row have some equidistant locating holes; Described tapering auxiliary conditioning unit comprises auxiliary support plate, height adjusting screws, the first matrix guide rail, tapering auxiliary adjustment plate and location-plate; Tapering auxiliary adjustment plate and location-plate hinged, tapering auxiliary adjustment plate is welded with the first convex guide rail, the first convex guide rail and the first matrix guide rail suitable, the side of tapering auxiliary adjustment plate is provided with screwed hole, in screwed hole, bolt is installed, bolt is provided with nut; First feeding hydrocylinder is fixedly mounted on tapering auxiliary adjustment plate, and the first feeding hydrocylinder is provided with piston rod, piston rod stretch out direction and the first convex guide rail parallel; The piston rod of the first feeding hydrocylinder withstands on the first matrix guide rail.
As preferably, described locking device is fixedly mounted in frame, locking device and U-shaped component suitable.Described index dial is connected in frame, index dial and handle suitable.Described location-plate is also provided with Workpiece fixing part.Described table slide is fixedly mounted on the top of frame.Described auxiliary support plate is provided with three screwed holes, described screwed hole and height adjusting screws suitable, the both sides of auxiliary support plate also have locating hole, are provided with alignment pin in locating hole, and the locating hole of alignment pin and blade row both sides is suitable.
Beneficial effect: compared with prior art, the present invention has the following advantages:
Device for machine tool for processing tapered hole inner hole key slot of the present invention, can be located on different large-scale component, utilize the relevant factor of workpiece to be machined self to position and process arbitrary taper taper hole keyway, have little mechanism process large workpiece, machining accuracy high, the feature such as taper hole keyway processing in arbitrary taper can be realized.Present invention achieves the main motion of processing tapered hole inner hole key slot needs, feed motion and conicity regulation function.The precision of tapering adjustment adjusts by worm gear transmission ratio, improves machining accuracy, and conicity regulation scope is large, can reach 0 ° to 20 °.Promote feeding simultaneously respectively at cutter Raft and main motion hydraulic cylinder two place's feeding the first feeding hydrocylinder and the second feeding hydrocylinder, precision can reach 0.1mm.For processing the inner hole key slot of tapered hole, the keyway in arbitrary taper hole can be processed.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the A-A sectional view in Fig. 1.
In figure, 2 auxiliary support plates, 3 blade rows, 4 height adjusting screws, 5 first matrix guide rails, 6 first feeding hydrocylinders, 8 bolts, 9 nuts, 10 tapering auxiliary adjustment plates, 11 location-plates, 12 table slides, 15 connectors, 18 frames, 19 worm gears, 20 first axles, 25 second feeding hydrocylinders, 26 second convex guide rails, 27 second matrix guide rails, 31 main motion hydraulic cylinders, 32U type component, 35 locking devices, 37 handles, 38 index dials, 43 Workpiece fixing parts, 46 second axles.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.
Refer to shown in Fig. 1 and Fig. 2, wherein, Fig. 2 is the A-A sectional view in Fig. 1.The present invention discloses a kind of device for machine tool for processing tapered hole inner hole key slot, comprises blade row 3, first feeding hydrocylinder 6, table slide 12, frame 18, worm gear 19, first axle 20, worm screw, the second feeding hydrocylinder 25, second convex guide rail 26, second matrix guide rail 27, main motion hydraulic cylinder 31, U-shaped component 32, locking device 35, handle 37, index dial 38, second axle 46 and tapering auxiliary conditioning unit; Tapering auxiliary conditioning unit is arranged on the top of blade row 3; The upper end of U-shaped component 32 is connected by the first axle 20 and the second axle 46 and frame 18, and the lower end of U-shaped component 32 is fixedly connected with the second convex guide rail 26; Worm gear 19 is arranged on the first axle 20, and worm screw is arranged in frame 18, and worm and wheel 19 is suitable; One end that worm screw stretches out outside frame 18 is connected mutually with handle 37; The bottom surface of main motion hydraulic cylinder 31 is fixedly connected with the second matrix guide rail 27, the second convex guide rail 26 and the second matrix guide rail 27 suitable; Second feeding hydrocylinder 25 is arranged on the second convex guide rail 26, and the piston rod movement direction of the second feeding hydrocylinder 25 is parallel with the second convex guide rail 26; Blade row 3 is connected with the upper end of main motion hydraulic cylinder 31, and blade row 3 is provided with gathering sill, the piston rod of main motion hydraulic cylinder 31 is equipped with knife rest, knife rest is equipped with cutter, and the both sides of blade row 3 have some equidistant locating holes; Tapering auxiliary conditioning unit comprises auxiliary support plate 2, height adjusting screws 4, first matrix guide rail 5, tapering auxiliary adjustment plate 10 and location-plate 11; Tapering auxiliary adjustment plate 10 is hinged with location-plate 11, tapering auxiliary adjustment plate 10 is welded with the first convex guide rail, the first convex guide rail and the first matrix guide rail 5 suitable, the side of tapering auxiliary adjustment plate 10 is provided with screwed hole, bolt 8 is installed in screwed hole, bolt 8 is provided with nut 9; First feeding hydrocylinder 6 is fixedly mounted on tapering auxiliary adjustment plate 10, and the first feeding hydrocylinder 6 is provided with piston rod, piston rod stretch out direction and the first convex guide rail parallel; The piston rod of the first feeding hydrocylinder 6 withstands on the first matrix guide rail 5.
In the present embodiment, locking device 35 is fixedly mounted in frame 18, locking device 35 and U-shaped component 32 suitable.Index dial 38 is connected in frame 18, index dial 38 and handle 37 suitable, handle 37 is star handle.Location-plate 11 is also provided with Workpiece fixing part 43.Table slide 12 is fixedly mounted on the top of frame 18.Auxiliary support plate 2 is provided with three screwed holes, screwed hole and height adjusting screws 4 suitable, the both sides of auxiliary support plate 2 also have locating hole, are provided with alignment pin in locating hole, and the locating hole of alignment pin and blade row 3 both sides is suitable.
The present invention consider conicity regulation complete after stable problem, devise locking device 35, to lock after completing conicity regulation.Consider that inner hole of workpiece diameter, width of keyway are different, cutter Raft 3 is designed to series, can change according to endoporus pore size.Consider that cutter Raft 3 and main motion hydraulic cylinder 31 length that links together is longer, be provided with tapering auxiliary conditioning unit in cutter Raft 3 upper end, add integral rigidity.
Tapering auxiliary conditioning unit comprises auxiliary support plate 2, height adjusting screws 4, first matrix guide rail 5, tapering auxiliary adjustment plate 10 and location-plate 11.U-shaped component 32 is arranged in frame 18 by the first axle 20 and the second axle 46, and the first axle 20 and the second axle 46 are equipped with a pair taper roll bearing respectively, and the first axle 20 to the second axle 46 is long, and one end of the first axle 20 reaches the side of frame 18; First axle 20 has keyway, and worm gear 19 is arranged on the first axle 20 by key, and worm screw is arranged in frame 18 by deep groove ball bearing, and worm and wheel 19 is suitable; One end that worm screw stretches out outside frame 18 is connected with handle 37 mutually by pin.U-shaped component 32 is achieved a fixed connection by bolt and the second convex guide rail 26, and bottom surface and the second matrix guide rail 27 of main motion hydraulic cylinder 31 are bolted to connection, the second convex guide rail 26 and the second matrix guide rail 27 suitable; Second feeding hydrocylinder 25 is arranged on the second convex guide rail 26, and the piston rod movement direction of the second feeding hydrocylinder 25 is parallel with the second convex guide rail 26.Blade row 3 is connected with main motion hydraulic cylinder 31 by connector, bolt, nut, and blade row 3 is provided with gathering sill, the piston rod of main motion hydraulic cylinder 31 is equipped with knife rest, knife rest is equipped with cutter, and the both sides of blade row 3 have equidistant locating hole.Location-plate 11 is placed on the upper surface of workpiece, tapering auxiliary adjustment plate 10 by pin and location-plate 11 hinged, tapering auxiliary adjustment plate 10 is welded with the first convex guide rail, the side of tapering auxiliary adjustment plate 10 is provided with screwed hole, bolt 8 is installed in screwed hole, bolt 8 is provided with nut 9; First matrix guide rail 5 is arranged on the first convex guide rail on tapering auxiliary adjustment plate 10, first feeding hydrocylinder 6 is arranged on tapering auxiliary adjustment plate 10 by bolt, first feeding hydrocylinder 6 is provided with piston rod, piston rod stretch out direction and the first convex guide rail parallel; The piston rod of the first feeding hydrocylinder 6 withstands on the first matrix guide rail 5, auxiliary support plate 2 is provided with three screwed holes, height adjusting screws 4 is housed in screwed hole, the both sides of auxiliary support plate 2 have locating hole, be provided with alignment pin in locating hole, alignment pin is stuck in the locating hole of blade row 3 both sides simultaneously.Frame 18 is provided with locking device 35.
Add man-hour, by work piece hoisting on table slide 12, use three points centering device to make the piston rod movement direction of the inner hole of workpiece center of circle and the first feeding hydrocylinder 6 on same straight line.Blade row 3 is lifted into inner hole of workpiece, uses bolt blade row 3, connection 15 to be connected with main motion hydraulic cylinder 31.Workpiece upper end is arranged on after being assembled by tapering auxiliary conditioning unit, Workpiece fixing part 43 on location-plate 11 is contacted with the endoporus of workpiece, adjustment location-plate 11 position and height adjusting screws 4, make alignment pin by the locating hole on auxiliary support plate 2 and the locating hole blocked on blade row 3.Blade row 3 is provided with gathering sill, will put into the gathering sill of blade row 3 after Cutting tool installation manner is on knife rest, and is connected by the piston rod of pin with main motion hydraulic cylinder 31.Because cutter and blade row 3 etc. are installed in inside workpiece, therefore no matter workpiece volume is much, all greatly can reduce lathe size, and wherein, blade row 3 should be processed into different-diameter series, to meet different pore size requirement.So not only achieve the object of the large workpiece of little machine tooling, and expand the range of work.
During conicity regulation, be rotatably installed in the handle 37 on worm screw, worm screw drives worm gear 19 to rotate, worm gear 19 is arranged on the first axle 20 by key, worm gear 19 connects drive first axle 20 by key and rotates, first axle 20 is connected with U-shaped component 32 by key, second axle 46 is also connected with U-shaped component 32 by key, and the first axle 20 and the second axle 46 concentric, therefore the rotation of the first axle 20 can drive U-shaped component 32 and the second axle 46 to rotate, and then drive main motion hydraulic cylinder 31 and blade row 3 to rotate, to the tapering required for processing work endoporus, make cutter parallel with inner hole of workpiece hole wall.
Tapering auxiliary conditioning unit is used to adjust tapering further, loosen nut 9, the position of adjustment bolt 8, after bolt 8 drives tapering auxiliary adjustment plate 10 to turn to suitable position, fastening nut 9, makes bolt 8 be supported on the upper surface of location-plate 11, positions tapering auxiliary adjustment plate 10.
Consider the precision problem of conicity regulation, worm screw adopts single head, and therefore revesal self-locking, can not affect angle because of position of centre of gravity change etc.Frame 18 is provided with index dial 38, the gearratio of worm and worm wheel 19 adopts 1:40, index dial 38 is divided into 18 grid, and the precision of conicity regulation just can reach 0.5 ° (lattice number or the raising worm gear transmission ratio of further refinement index dial can improve angle precision further).Lock U-shaped component 32 by locking device 35 after angular adjustment completes, whole device will be made to depart from the angle of setting because of vibrations or cutting force in process like this.
After conicity regulation completes, the piston rod of main motion hydraulic cylinder 31 drives and is arranged on the cutter on knife rest and completes first time from top to bottom along the gathering sill of blade row 3 and cut, then original position is retreated to soon, being arranged on the first feeding hydrocylinder 6 on tapering auxiliary adjustment plate 10 with being arranged on promotes cutter Raft 3 together with the second feeding hydrocylinder 25 on U-shaped component 32 and carries out primary feed with main motion hydraulic cylinder 31 along the first convex guide rail and the second convex guide rail 26, and wherein the feed accuracy of the first feeding hydrocylinder 6 and the second feeding hydrocylinder 25 can reach 0.1mm.After feeding completes, the piston rod of main motion hydraulic cylinder 31 drives the cutter be arranged on knife rest to carry out second time and cuts, and so forth until complete whole cutwork.
Main motion drives the knife rest of mounting cutter to slide up and down realization along the guide rail of cutter Raft 3 by the piston rod of main motion hydraulic cylinder 31.Conicity regulation is coordinated with worm screw by worm gear 19, drives to be arranged on that main motion hydraulic cylinder on U-shaped component 32 31 and cutter Raft 3 realize.Feed motion promotes cutter Raft 3 by the feeding hydrocylinder 6 be arranged on tapering auxiliary adjustment plate 10 respectively with the feeding hydrocylinder 25 be arranged on U-shaped component 32 to realize with main motion hydraulic cylinder 31.
Device for machine tool for processing tapered hole inner hole key slot of the present invention, can be located on different large-scale component, utilize the relevant factor of workpiece to be machined self to position and process arbitrary taper taper hole keyway, have little mechanism process large workpiece, machining accuracy high, the feature such as taper hole keyway processing in arbitrary taper can be realized.Present invention achieves the main motion of processing tapered hole inner hole key slot needs, feed motion and conicity regulation function.The precision of tapering adjustment adjusts by worm gear transmission ratio, improves machining accuracy, and conicity regulation scope is large, can reach 0 ° to 20 °.Promote feeding simultaneously respectively at cutter Raft 3 and main motion hydraulic cylinder 31 liang place's feeding the first feeding hydrocylinder 6 and the second feeding hydrocylinder 25, precision can reach 0.1mm.For processing the inner hole key slot of tapered hole, the keyway in arbitrary taper hole can be processed.
Claims (6)
1. one kind for processing the device for machine tool of tapered hole inner hole key slot, it is characterized in that: comprise blade row (3), first feeding hydrocylinder (6), table slide (12), frame (18), worm gear (19), first axle (20), worm screw, second feeding hydrocylinder (25), second convex guide rail (26), second matrix guide rail (27), main motion hydraulic cylinder (31), U-shaped component (32), locking device (35), handle (37), index dial (38), second axle (46) and tapering auxiliary conditioning unit, described tapering auxiliary conditioning unit is arranged on the top of blade row (3), the upper end of described U-shaped component (32) is connected with frame (18) by the first axle (20) and the second axle (46), and the lower end of U-shaped component (32) is fixedly connected with the second convex guide rail (26), worm gear (19) is arranged on the first axle (20), and worm screw is arranged in frame (18), and worm and wheel (19) is suitable, one end that worm screw stretches out frame (18) outside is connected mutually with handle (37), the bottom surface of main motion hydraulic cylinder (31) is fixedly connected with the second matrix guide rail (27), the second convex guide rail (26) and the second matrix guide rail (27) suitable, second feeding hydrocylinder (25) is arranged on the second convex guide rail (26), and the piston rod movement direction of the second feeding hydrocylinder (25) is parallel with the second convex guide rail (26), blade row (3) is connected with the upper end of main motion hydraulic cylinder (31), blade row (3) is provided with gathering sill, the piston rod of main motion hydraulic cylinder (31) is equipped with knife rest, knife rest is equipped with cutter, and the both sides of blade row (3) have some equidistant locating holes, described tapering auxiliary conditioning unit comprises auxiliary support plate (2), height adjusting screws (4), the first matrix guide rail (5), tapering auxiliary adjustment plate (10) and location-plate (11), tapering auxiliary adjustment plate (10) is hinged with location-plate (11), tapering auxiliary adjustment plate (10) is welded with the first convex guide rail, first convex guide rail and the first matrix guide rail (5) suitable, the side of tapering auxiliary adjustment plate (10) is provided with screwed hole, bolt (8) is installed in screwed hole, bolt (8) is provided with nut (9), first feeding hydrocylinder (6) is fixedly mounted on tapering auxiliary adjustment plate (10), and the first feeding hydrocylinder (6) is provided with piston rod, piston rod stretch out direction and the first convex guide rail parallel, the piston rod of the first feeding hydrocylinder (6) withstands on the first matrix guide rail (5).
2. the device for machine tool for processing tapered hole inner hole key slot according to claim 1, it is characterized in that: described locking device (35) is fixedly mounted in frame (18), locking device (35) and U-shaped component (32) suitable.
3. the device for machine tool for processing tapered hole inner hole key slot according to claim 1, it is characterized in that: described index dial (38) is connected in frame (18), index dial (38) and handle (37) suitable.
4. the device for machine tool for processing tapered hole inner hole key slot according to claim 1, is characterized in that: described location-plate (11) is also provided with Workpiece fixing part (43).
5. the device for machine tool for processing tapered hole inner hole key slot according to claim 1, is characterized in that: described table slide (12) is fixedly mounted on the top of frame (18).
6. the device for machine tool for processing tapered hole inner hole key slot according to claim 1, it is characterized in that: described auxiliary support plate (2) is provided with three screwed holes, described screwed hole and height adjusting screws (4) suitable, the both sides of auxiliary support plate (2) also have locating hole, be provided with alignment pin in locating hole, the locating hole of alignment pin and blade row (3) both sides is suitable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219662.3A CN103286386B (en) | 2013-06-03 | 2013-06-03 | A kind of device for machine tool for processing tapered hole inner hole key slot |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310219662.3A CN103286386B (en) | 2013-06-03 | 2013-06-03 | A kind of device for machine tool for processing tapered hole inner hole key slot |
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| Publication Number | Publication Date |
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| CN103286386A CN103286386A (en) | 2013-09-11 |
| CN103286386B true CN103286386B (en) | 2015-09-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310219662.3A Expired - Fee Related CN103286386B (en) | 2013-06-03 | 2013-06-03 | A kind of device for machine tool for processing tapered hole inner hole key slot |
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| RO60333A2 (en) * | 1973-01-30 | 1976-10-15 | ||
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| CN102699419A (en) * | 2012-05-29 | 2012-10-03 | 尹时中 | Hard broaching finish machining process for surface of internal keyway and device |
| CN103042269A (en) * | 2012-07-04 | 2013-04-17 | 南通新冯精密机械有限公司 | Vertical internal broaching machine |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2000024830A (en) * | 1998-07-15 | 2000-01-25 | Toshiba Corp | Key groove machining device |
| JP4119771B2 (en) * | 2003-02-26 | 2008-07-16 | 株式会社不二越 | Internal broaching machine |
| JP4349868B2 (en) * | 2003-09-04 | 2009-10-21 | 富士重工業株式会社 | Broach and broach device |
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Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RO60333A2 (en) * | 1973-01-30 | 1976-10-15 | ||
| US6551032B1 (en) * | 2001-11-07 | 2003-04-22 | General Electric Company | Multi-part dovetail repair broach assembly and methods of use |
| CN202398892U (en) * | 2011-11-16 | 2012-08-29 | 日照市七星汽车部件有限公司 | Machining device for tapered hole keyslot of motor steering knuckle |
| CN102699442A (en) * | 2012-05-22 | 2012-10-03 | 湖北铭程精密机械有限责任公司 | Precision cutting head for inner-hole keyways |
| CN102699419A (en) * | 2012-05-29 | 2012-10-03 | 尹时中 | Hard broaching finish machining process for surface of internal keyway and device |
| CN103042269A (en) * | 2012-07-04 | 2013-04-17 | 南通新冯精密机械有限公司 | Vertical internal broaching machine |
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Inventor after: Ren Jialong Inventor after: Xia Tian Inventor after: Chen Dandan Inventor after: Yin Wanxin Inventor after: Yu Fengxia Inventor after: Lian Lilin Inventor after: Xue Ning Inventor after: Guan Xiaoyan Inventor after: Wu Aisheng Inventor after: Zhao Ligang Inventor after: Wu Hongwei Inventor after: Xie Jianxin Inventor before: Ren Jialong Inventor before: Yu Fengxia Inventor before: Lian Lilin Inventor before: Guan Xiaoyan Inventor before: Wu Aisheng Inventor before: Zhao Ligang Inventor before: Wu Hongwei Inventor before: Xie Jianxin Inventor before: Xia Tian |
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